Highest temperature in Beijing on July 7?

Platform comparison

Market context

The underlying real-world event is the peak temperature recorded at Beijing Capital International Airport on 7 July 2026, a date that historically sits within the city’s hottest month. Current crowd-implied probability for a 32°C hit is 0% YES, yet weather models and comparable cases suggest this figure may be premature. In July, daily highs in Beijing typically average 88°F (31.1°C), rarely dipping below 78°F (25.6°C) or exceeding 96°F (35.6°C)[2]. Historical data shows the city’s hottest day reached 42.1°C on 5 July 2010, while 2023 saw a peak of 40°C in the same month[3][8]. Even in 2024, China recorded its hottest July on record nationally, with average temperatures eclipsing previous highs[4][7]. These precedents frame the 0% probability as potentially misaligned with seasonal volatility.

Traders should monitor upcoming meteorological bulletins and humidity forecasts, as high moisture levels can amplify heat stress and push temperatures beyond typical ranges. Recent news confirms China’s July 2024 was the hottest month in recent history, with national averages hitting 23.21°C, surpassing 2017’s record[4]. Authorities have previously urged residents to limit outdoor exposure during extreme heatwaves, indicating official awareness of rising thermal risks[6]. On Polymarket, this contract resolves via conditional tokens on the Polygon network, settling in USDC once Wunderground publishes the day’s maximum temperature for the airport station. The settlement window closes at 12:00 UTC on 7 July 2026, meaning real-time weather updates from the coming days will directly influence price movements before expiry.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Highest temperature in Beijing on July 7? across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to PolyGram, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

FAQ

Where can I trade this market with the lowest fees?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is PolyGram. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

Is this market available outside the US?

Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.

How does resolution work?

Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.

What's the difference between YES and NO shares?

A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like PolyGram trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.